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发明名称
TRUSS FIXTURE FOR ELECTRIC RAILWAY EQUIPMENT
摘要
申请公布号
CA311303(A)
申请公布日期
1931.05.12
申请号
CAD311303
申请日期
申请人
THE MALLEABLE IRON FITTINGS COMPANY
发明人
ROLLAND G. WILLIAMS
分类号
主分类号
代理机构
代理人
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